1 #include <stdio.h> 2 #include <fcntl.h> 3 #include <errno.h> 4 #include <sys/stat.h> 5 #include <string.h> 6 #include <stdlib.h> 7 #include "syscall.h" 8 #include "kstat.h" 9 10 #define MAXTRIES 100 11 tmpnam(char * buf)12char *tmpnam(char *buf) 13 { 14 static char internal[L_tmpnam]; 15 char s[] = "/tmp/tmpnam_XXXXXX"; 16 int try; 17 int r; 18 for (try=0; try<MAXTRIES; try++) { 19 __randname(s+12); 20 #ifdef SYS_lstat 21 r = __syscall(SYS_lstat, s, &(struct kstat){0}); 22 #else 23 r = __syscall(SYS_fstatat, AT_FDCWD, s, 24 &(struct kstat){0}, AT_SYMLINK_NOFOLLOW); 25 #endif 26 if (r == -ENOENT) return strcpy(buf ? buf : internal, s); 27 } 28 return 0; 29 } 30